(2013·皖南八校联考) here yesterday，he could have seen Jackie Chan.
A. If Bob has e
B. If Bob came
C. If Bob had e
D. If Bob should e
网友回答
A. If Bob has e
B. If Bob came
(答案→)C. If Bob had e
D. If Bob should e
解析：句意：如果Bob昨天来这，他就能见到成龙了。分析句意和句子结构可知，此处表示与过去事实相反的虚拟，故从句应用过去完成时。在虚拟条件句中，如果含有had，were，should等时，if可省略，句子倒装，故此处的If Bob had e也可为Had Bob e。